Apparatus and method for sanding brick molds



July 7, 1925;

R. P. M. DAVIS APPARATUS AND METHOD FOR SANDING BRICK MOLDS Fild Oct. 5. 1923 l0 method for sanding brick molds and more Y supply being open.

Patented July 7, 1925.

. y nrrnnn'rus Ann-Metric;nonisnnnmefiamenMemos,

npplieation antenna 5 me.

To all who mi tz 4ny mm.5 if.

Be it known thatRoY P. citizen of the United States of America, residing at Mount Union, in theiconnty of Huntingdon and State of -l ennsylvania, has

invented C81 tain new a -nd usefulv ifnnprovea quantity of ments in Apparatus and'Methods for Sanding Brick liolds,of which the following is' a specification.

My invention relates toapparatus and.

particularly for sanding the plate which forms the bottom of the molds. I

It is well known among brick makers that the mud or material from which bricks are made will adhere to the mold and bottom plate therefor. This adhering brick interferes with the making of a perfect brick and it is the object of the present device to obviate this objectionable condition by sanding the mold and mold plate prior to the introduction of the charge of mud into the mold.

In the accompanying drawings: Figure 1 is a plan View of an apparatus illustrating a preferred embodiment of my invention;

Figure 2 is an enlarged detail sectional view of the sand receptacle ortrap and the air nozzle therefor, the air supply being cut off; and p Figure 3 is a side elevation partly broken away of the mud feeding chute of a brick making machine showing the sandreceptacle and air nozzle attached thereto, a slicker and mold plate being also shown and the air Referring more particularly to the drawings, 5, denotes the open ended enclosure or chute of a brick making machine (not shown) through which mud or other material is precipitated to the brick mold (not shown) Secured to the side wall 6, of the chute by any suitable fastening means (not shown) is a threaded collar 7, internally threaded to receive the inner threaded end ofa pipe 8, the outer end of which is connected to the inner threaded end of a T coupling member or pipe 9. A nozzle 10, projects through the outer end of the member 9, and is threadedly connected thereto by means of the threaded head or cap 11, form ing a part of the nozzle. This head or cap 11,.is apertured as at 12, to receive the outlet end of an air blast pipe 13," leading" new DAY-Is,oF1=MoUI frnivremrnmvsitnyniq it.

p {10151 sin ble M. DAvis, a

Sh-O m?) A. two str ng rs,

1n the P1136 is operated means o f tlie sand I the member 9, by means of a pipe 16, the latter be ng connected at its upper endto the inclined bottom of the hopper and at its lower end to the vertically disposed neck 17,o f the member 9. i

From the foregoing it is operation of the apparatus will be apparent,

15, communicates with i thoughtthe handle 5 19, for reontrolling the "supply of s ar A bin op 14;, ade 0, (11114 but a brief description thereof will be given as follows: Upon the arrival of the mold (not shown) and the bottom plate 20, therefor, at the filling station or position beneath the mud chute 5, (see Figure 3) valve 1.8,

isopened allowingthe compressed air to escape from nozzle 10,'car ry1n'g with it sand in the form of a spray 21, which falls upon and thoroughly sprinkles the mold plate 20.

As the sand is carried away from thereceptacle it is automatically replaced by a fresh supply from the bin or hopper 14.

' The combined length of the pipe 8, and in coupling 9, is approximately double the lenth of the nozzle 10, the latter projecting" slightly beyond the top opening of the coupling with which the pipe'16, communicates.

Consequently when the valve 18, is closed, the sand in the coupling becomes chocked and automatically cuts off the flow of sand from the bin or hopper 14. It will also be noted that the:pipe 8, and coupling 9, form in effect, a sand receptacle 22/ lVhen the air supply is shut off the accumulationfof sand 1n the pipe 8, and couphng9, covers and flows beyond the end of the nozzle thus providinga charge of sandin front .ofl-the' nozzle. A new supply of sand constantly drops down by gravity in front ofthe nozzle 00 as fast" as the sand is forced through the pipe 8, into the chute 5, and the nozzle therefore always has a'uniform charge of sand to work upon.

parts of a'brick making machine. WVhile the mold is illustrated In Figure 3, a slicker 25, is illustrated merely to show the'relative position of my invention with respect to the as being sanded while stationary beneath the mud chute, it will of course be understood that; the sanding operation may be performed while the plate is in t-ransit. Also that a p I plurality ofno'zzles 10, may be employed.

Havin thus described my invention: 1 What claim is: I 1. The herein described method of sanding mold plates, which 1 consists in introducing sand in the form, of a spray into a confined space'above the, plate so .that the spray will fall by gravity upon the plate.

2. The herein described method of sanding mold plates which consists in forcing sandinto :an open ended enclosure positioned 1 above the mold plate by means of an air blast. '7

' 3. An apparatus for sanding mold plates comprising a sand receptacle having a horizontally disposed air nozzle therein, and a sand inlet opening, above said nozzle, means for feedlng a supply of air through said nozzle, means forfeeding sand to sald recep- ROY P. M. DAVIS.

Witnesses: V'. L. WALLETT,

ERMA RosENsTEEL.

tacle, an open ended enclosure with which 

